//
//  FGNetworkManager+Extension.swift
//  飞哥大微博
//
//  Created by huangfei on 2017/6/6.
//  Copyright © 2017年 huangfei. All rights reserved.
//

import Foundation

// 封装新浪微博的网络请求方法
extension FGNetworkManager {
    
    /// 加载微博数据字典数组
    ///
    /// - Parameters:
    ///   - since_id: 返回ID比since_id大的微博（即比since_id时间晚的微博），默认为0
    ///   - max_id: 返回ID小于或等于max_id的微博，默认为0
    ///   - completion: 完成回调[list: 微博字典数组/是否成功]
    func statusList(since_id:Int64 = 0,max_id:Int64 = 0,completion:@escaping (_ list:[[String:Any]]?,_ isSuccess:Bool) -> ()) {
        
        let urlString = "https://api.weibo.com/2/statuses/home_timeline.json"
        
        // Swift 中 Int 可以转换成 AnyObject/ 但是 Int64 不行
        let params = ["since_id":"\(since_id)",
            "max_id":"\(max_id > 0 ? max_id - 1 : 0)"]
        
        tokenRequest(URLString: urlString, parameters: params) { (json, isSuccess) in
            // 从JSON中获取status字典数组
            // 如果as?失败，result = nil
            //            let result = json?["statuses"] as? [[String: Any]]
            let resultNew = json as? [String:Any]
            let result = resultNew?["statuses"]  as? [[String:Any]]
            
            completion(result, isSuccess)
        }
    }
    
    // 返回新浪微博的未读数量
    func unreadCount(completion:@escaping (_ count:Int)->()) {
        guard let uid = userAccount.uid else {
            return
        }
        let urlString = "https://rm.api.weibo.com/2/remind/unread_count.json"
        let params = ["uid":uid]
        
        tokenRequest(URLString: urlString, parameters: params) { (json, isSuccess) in
            let dict = json as? [String:Any]
            let count = dict?["status"] as? Int
            completion(count ?? 0)
        }
    }
}

// MARK: - 用户信息
extension FGNetworkManager {
    // 加载当前用户信息 - 用户登陆后立即执行
    func loadUserInfo(completion:@escaping (_ dict:[String:Any]) -> ()) {
        guard let uid = userAccount.uid else {
            return
        }
        
        let urlString = "https://api.weibo.com/2/users/show.json"
        let params = ["uid":uid]
        
        // 发起网络请求
        tokenRequest(URLString: urlString, parameters: params) { (json, isSuccess) in
            completion((json as? [String:Any]) ?? [:])
        }
    }
}

// MARK: - OAuth相关方法
extension FGNetworkManager {
    /// 加载 AccessToken
    ///
    /// - Parameters:
    ///   - code: 授权码
    ///   - completion: 完成回调【是否成功】
    func loadAccessToken(code:String,completion:@escaping (_ isSuccess:Bool) -> ()) {
        let urlString = "https://api.weibo.com/oauth2/access_token"
        let params = ["client_id":FGAppKey,
                      "client_secret":FGAppSecret,
                      "grant_type":"authorization_code",
                      "code":code, 
                      "redirect_uri":FGRedirectURL]
        // 发起网络请求
        request(method: .POST, URLString: urlString, parameters: params) { (json, isSuccess) in
            
            // 如果请求失败，对用户数据不会有任何影响
            // 直接用字典设置 userAccount 的属性
            self.userAccount.yy_modelSet(with: (json as? [ String:Any]) ?? [:])
            
            // 加载当前用户信息
            self.loadUserInfo(completion: { (dict) in
                // 使用用户信息字典设置用户账户信息（账户和头像地址）
                self.userAccount.yy_modelSet(with: dict)

                // 保存模型
                self.userAccount.saveAccount()
                
                // 用户信息加载完成，然后完成回调
                completion(isSuccess)
            })
        }
    }
}
